Casing shaping tool and method

Abstract

The present application belongs to the technical field of oil field drilling, and discloses a casing shaping tool and method. The casing shaping tool can be connected to a hydraulic pipe to perform shaping on an oil well casing. Specifically, the casing shaping tool comprises an anchoring assembly, a functional short section and a shaping assembly. The anchoring assembly can be connected to the hydraulic pipe, and can be expanded when the hydraulic pressure reaches a first preset value to be locked in the casing to be repaired. The functional short section comprises a connecting string, a releasing assembly and a check valve, and the connecting string is connected to the end of the anchoring assembly away from the hydraulic pipe. The releasing assembly and the check valve are both arranged in the connecting string, and the releasing assembly can release the connecting string. The shaping assembly is connected to the end of the connecting string away from the anchoring assembly. The check valve can be opened when the hydraulic pressure reaches a second preset value to communicate the anchoring assembly and the shaping assembly, the second preset value is greater than the first preset value, and the shaping assembly can be driven by the hydraulic pressure to perform shaping when the check valve is opened.

Description

Technical Field

[0001] This invention relates to the field of oilfield drilling technology, and in particular to a casing shaping tool and method. Background Technology

[0002] Shale gas reservoirs have complex geological conditions, and casing deformation often occurs during development, severely affecting the efficient development and utilization of shale gas wells. Therefore, there is an urgent need for a casing reshaping tool and method to expand, reshape, and repair wells with casing deformation. Summary of the Invention

[0003] The purpose of this invention is to provide a casing shaping tool and method to achieve casing shaping and emergency release, and to ensure the orderly implementation of anchoring and shaping operations.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A casing shaping tool, capable of connecting to a hydraulic hose, includes:

[0006] An anchoring assembly is available for connection to the hydraulic pipe. The anchoring assembly expands when the hydraulic pressure reaches a first preset value to lock itself inside the sleeve to be repaired.

[0007] The functional section includes a connecting column, a release assembly, and a check valve. The connecting column is connected to the end of the anchoring assembly away from the hydraulic pipe. The release assembly and the check valve are both disposed inside the connecting column. The release assembly enables the connecting column to release the hand.

[0008] A shaping component is connected to the end of the connecting column away from the anchoring component;

[0009] The one-way valve can open when the hydraulic pressure reaches a second preset value to connect the anchoring component and the shaping component. The second preset value is greater than the first preset value. The shaping component can be hydraulically driven to perform shaping when the one-way valve is open.

[0010] Optionally, the connecting column includes a first column and a second column, the first column is connected to the anchoring assembly, the second column is sleeved outside the first column, and the second column is connected to the shaping assembly;

[0011] The throwing assembly includes a pin, a ball, and a ball seat. The ball seat is connected to the first column and located inside the second column. The pin passes through and fixes the ball seat and the second column. The ball can enter the second column through the anchoring assembly and press against the ball seat. The ball can squeeze the ball seat under hydraulic drive to cut the pin.

[0012] Optionally, the one-way valve includes an elastic element and a blocking element, both of which are disposed within the connecting tubing. The blocking element can block the connecting tubing under the action of the elastic element.

[0013] Optionally, the one-way valve further includes a guide post, a tubular section, and an end plate section. The tubular section is disposed within the connecting tubular section, and the end plate section is disposed at the end of the tubular section away from the anchoring assembly. The guide post is slidably disposed on the end plate section, the sealing member is disposed on the guide post, and the elastic member is sandwiched between the sealing member and the end plate section. The sealing member can press against the inner wall of the tubular section under the action of the elastic member to block the tubular section. The end plate section is provided with a through hole.

[0014] Optionally, the shaping assembly includes a hydraulic drive and an expansion cone, the hydraulic drive being connected to the connecting column, the expansion cone being connected to the hydraulic drive, and the hydraulic drive being able to drive the expansion cone to expand when the check valve is opened.

[0015] Optionally, the hydraulic drive component includes a drive housing and a push shaft. The drive housing is connected to the connecting column, and the expansion cone is connected to the drive housing. The push shaft includes a connected shaft column portion and a tapered portion. The shaft column portion is slidably disposed within the drive housing along the axial direction, and the tapered portion extends from the shaft column portion into the expansion cone. The sliding of the shaft column portion can drive the tapered portion to push the expansion cone to expand.

[0016] Optionally, the anchoring assembly includes an anchoring column and an anchoring slip. The anchoring column can be connected to the hydraulic pipe, and the anchoring slip is movably disposed on the anchoring column. The anchoring slip can expand when the hydraulic pressure reaches the first preset value to resist and lock into the sleeve to be repaired.

[0017] The cannula shaping method, implemented using any of the cannula shaping tools described above, includes the following steps:

[0018] S1. Connect the anchoring assembly to the hydraulic pipe, and lower the casing shaping tool into the casing to be repaired, placing it above the deformed part of the casing.

[0019] S2. Adjust the hydraulic pressure of the hydraulic pipe to the first preset value, and start the anchoring component to anchor the casing shaping tool inside the casing to be repaired;

[0020] S3. Adjust the hydraulic pressure of the hydraulic pipe to the second preset value, open the one-way valve, and the shaping component is driven by hydraulic pressure to carry out the shaping operation.

[0021] Optionally, the following steps are included after step S3:

[0022] S4. Adjust the hydraulic pressure in the hydraulic pipe to be lower than the first preset value, close the check valve, and close the anchoring assembly;

[0023] S5. Continue to lower the sleeve shaping tool to above the next sleeve deformation point;

[0024] S6. Repeat steps S2-S5 to complete the shaping of the sleeve to be repaired.

[0025] Optionally, the following steps are included after step S3:

[0026] S7. Extract the cannula shaping tool from the upper part;

[0027] S8. If the sleeve shaping tool gets stuck, activate the release component to cut off the connecting pipe string.

[0028] S9. Remove the sleeve to be repaired from the component above the connecting pipe column.

[0029] Beneficial effects:

[0030] The casing shaping tool and method provided by this invention involve the following steps: First, the anchoring component is connected to the hydraulic pipe (such as drill pipe, tubing, etc.). The casing shaping tool is then lowered into the casing to be repaired, positioned above the deformed area. Next, the hydraulic pressure in the hydraulic pipe is adjusted to a first preset value, thereby activating the anchoring component and anchoring the casing shaping tool inside the casing. Then, the hydraulic pressure in the hydraulic pipe is further adjusted to a second preset value. At this point, the check valve opens, and the shaping component is hydraulically driven to perform the shaping operation. This invention achieves sequential activation of the anchoring component and the shaping component, which helps prevent the casing shaping tool from upward thrusting during the shaping operation and avoids bending deformation of the hydraulic pipe. After the casing shaping operation, if the casing shaping tool cannot be lifted, the release component can be used to release the connecting pipe string, allowing the hydraulic pipe, anchoring component, and the cut connecting pipe string to be removed, thus improving the safety of the construction operation. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the casing shaping tool provided in an embodiment of the present invention connected to the drill pipe;

[0032] Figure 2 This is a schematic diagram of the casing shaping tool provided in an embodiment of the present invention connected to a continuous tube;

[0033] Figure 3 This is a schematic diagram of the structure of the functional short section (one-way valve closed) provided in an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the structure of the functional short section (one-way valve open) provided in an embodiment of the present invention;

[0035] Figure 5This is a schematic diagram of the structure of the shaping component provided in an embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the sleeve shaping tool provided in the embodiment of the present invention when it is released from the hand.

[0037] In the diagram: 100, hydraulic pipe; 101, adapter; 102, sleeve to be repaired;

[0038] 1. Anchoring assembly; 11. Anchoring column; 12. Anchoring slip;

[0039] 2. Functional section; 21. Connecting column; 211. First column; 212. Second column; 22. Release assembly; 221. Pin; 222. Throwing ball; 223. Ball seat; 23. Check valve; 231. Elastic element; 232. Sealing element; 233. Guide post; 234. Column section; 235. End plate section; 2351. Through hole;

[0040] 3. Shaping assembly; 31. Hydraulic drive component; 311. Drive housing; 312. Push shaft; 3121. Shaft column; 3122. Tapered section; 32. Expansion cone. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0042] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0045] like Figures 1-6 As shown, this embodiment provides a casing shaping tool. Specifically, the casing shaping tool includes an anchoring assembly 1, a functional sub 2, and a shaping assembly 3. The casing shaping tool can be connected to a hydraulic pipe 100 to shape the oil well casing. The hydraulic pipe 100, as the feeding device for the casing shaping tool, can be drill pipe, tubing, or coiled tubing, etc. Figure 1 As shown, when the drill pipe is used as the hydraulic pipe 100, the hydraulic pipe 100 is directly connected to the anchoring assembly 1. For example... Figure 2 As shown, when a continuous tubing is used as the hydraulic line 100, an adapter 101 is connected between the hydraulic line 100 and the anchoring assembly 1. A drive pump is connected to the hydraulic line 100 to provide pressure to the fluid within the hydraulic line 100.

[0046] Anchoring component 1 can be connected to hydraulic pipe 100. Anchoring component 1 expands when the hydraulic pressure reaches a first preset value to lock within the sleeve 102 to be repaired. Functional section 2 includes connecting column 21, release component 22, and check valve 23. Connecting column 21 is connected to the end of anchoring component 1 away from hydraulic pipe 100. Both release component 22 and check valve 23 are located within connecting column 21. Release component 22 allows the connecting column 21 to be released. Shaping component 3 is connected to the end of connecting column 21 away from anchoring component 1. Check valve 23 opens when the hydraulic pressure reaches a second preset value to connect anchoring component 1 and shaping component 3. The second preset value is greater than the first preset value. Shaping component 3 is hydraulically driven to perform shaping when check valve 23 is open. The specific settings of the first and second preset values ​​are implemented according to actual working conditions and are not limited here.

[0047] When using the casing shaping tool provided in this embodiment, firstly, the anchoring component 1 is connected to the hydraulic pipe 100 (such as drill pipe, tubing, etc.). The casing shaping tool is then lowered into the casing 102 to be repaired, positioned above the deformed area of ​​the casing. Next, the hydraulic pressure of the hydraulic pipe 100 is adjusted to a first preset value, thereby activating the anchoring component 1 and anchoring the casing shaping tool inside the casing 102 to be repaired. Then, the hydraulic pressure of the hydraulic pipe 100 is further adjusted to reach a second preset value. At this point, the check valve 23 opens, and the shaping component 3 is hydraulically driven to perform the shaping operation. This invention achieves the sequential activation of the anchoring component 1 and the shaping component 3, which helps prevent the casing shaping tool from experiencing upward thrust during the shaping operation and avoids bending deformation of the hydraulic pipe 100. Conversely, without the isolation provided by functional section 2, anchoring assembly 1 and shaping assembly 3 would operate simultaneously, making effective positioning impossible during the shaping process. This could result in expansion before positioning, leading to a top-down situation and preventing the operation from being completed effectively. In severe cases, it could cause the hydraulic tube 100 to buckle and deform. Moreover, because they operate simultaneously, operators cannot effectively assess the downhole situation from outside the well. After casing shaping, if the casing shaping tool cannot be lifted, the release assembly 22 can be used to release the connecting string 21, allowing the hydraulic tube 100, anchoring assembly 1, and the cut connecting string 21 to be removed, thus improving the safety of the operation.

[0048] like Figures 3-4 As shown, optionally, the connecting column 21 includes a first column 211 and a second column 212. The first column 211 is connected to the anchoring component 1, and the second column 212 is fitted over the first column 211 and connected to the shaping component 3. The dropping component 22 includes a pin 221, a throwing ball 222, and a ball seat 223. The ball seat 223 is connected to the first column 211 and located inside the second column 212. The pin 221 passes through and fixes the ball seat 223 and the second column 212. The throwing ball 222 can enter the second column 212 through the anchoring component 1 and press against the ball seat 223. The throwing ball 222 can squeeze the ball seat 223 under hydraulic drive to cut the pin 221. In other words, after the casing shaping tool gets stuck inside the casing, a ball 222 can be inserted into the hydraulic pipe 100. Using the cooperation of the ball 222 and the ball seat 223, the pin 221 is cut off, thus disconnecting the connecting pipe column 21 and allowing for easy removal of the handle. This improves the safety of the construction operation, and the connecting pipe column 21 and its components above it can then be removed. Further structural features and working principles of the handle-removing component 22 can be found in common knowledge in the field and will not be elaborated here.

[0049] See also Figure 3 and Figure 4As shown, optionally, the one-way valve 23 includes an elastic element 231 and a blocking element 232, both of which are disposed within the connecting pipe string 21. The blocking element 232 can block the connecting pipe string 21 under the action of the elastic element 231. When the hydraulic pressure reaches a second preset value, the blocking element 232 causes the elastic element 231 to deform and open the channel of the connecting pipe string 21, thereby connecting the hydraulic channel between the anchoring assembly 1 and the shaping assembly 3, and realizing the transmission of hydraulic pressure to the shaping assembly 3.

[0050] See also Figure 3 and Figure 4 As shown, optionally, the one-way valve 23 further includes a guide post 233, a tubular portion 234, and an end plate portion 235. The tubular portion 234 is disposed within the connecting tubular portion 21, and the end plate portion 235 is disposed at the end of the tubular portion 234 away from the anchoring assembly 1. The guide post 233 is slidably disposed on the end plate portion 235. A sealing member 232 is disposed on the guide post 233, and an elastic member 231 is sandwiched between the sealing member 232 and the end plate portion 235. The sealing member 232 can press against the inner wall of the tubular portion 234 under the action of the elastic member 231 to block the tubular portion 234. The end plate portion 235 is provided with a through hole 2351. The opening and closing motion of the one-way valve 23 is stable, which is beneficial for its precise control. In this embodiment, the one-way valve 23 is located on the side of the release assembly 22 away from the anchoring assembly 1. In this embodiment, the elastic member 231 is a spring, which is sleeved on the guide post 233.

[0051] like Figure 5 As shown, optionally, the shaping assembly 3 includes a hydraulic drive 31 and an expansion cone 32. The hydraulic drive 31 is connected to the connecting tubing 21, and the expansion cone 32 is connected to the hydraulic drive 31. The hydraulic drive 31 can drive the expansion cone 32 to expand when the check valve 23 is opened. That is, the hydraulic drive 31 provides driving force for the expansion of the expansion cone 32, causing the expansion cone 32 to expand and perform shaping.

[0052] See also Figure 5As shown, optionally, the hydraulic drive component 31 includes a drive housing 311 and a push shaft 312. The drive housing 311 is connected to the connecting column 21, and the expansion cone 32 is connected to the drive housing 311. The push shaft 312 includes a connected shaft portion 3121 and a tapered portion 3122. The shaft portion 3121 is axially slidably disposed within the drive housing 311, and the tapered portion 3122 extends from the shaft portion 3121 into the expansion cone 32. The sliding of the shaft portion 3121 can drive the tapered portion 3122 to push the expansion cone 32 to expand. The longer the tapered portion 3122 extends downward into the expansion sleeve, the larger the outer diameter of the expansion sleeve. In this embodiment, the drive housing 311 also has a pressure relief device. After the drive pump depressurizes, the pressure relief device automatically releases pressure, the tapered portion 3122 retracts upward, and the diameter of the expansion cone 32 decreases. The expansion cone 32 can shrink as the conical portion 3122 retracts, which helps to prevent it from sticking to the deformed part of the sleeve. Further structural features and working principles of the shaping assembly 3 can be found in common knowledge in the art, and will not be described here.

[0053] The specific structure and principle of the anchoring component 1 can be referred to the existing technology, and are not limited here. Optionally, the anchoring component 1 includes an anchoring column 11 and an anchoring slip 12. The anchoring column 11 can be connected to the hydraulic pipe 100, and the anchoring slip 12 is movably disposed on the anchoring column 11. The anchoring slip 12 can expand when the hydraulic pressure reaches a first preset value to hold and lock into the sleeve 102 to be repaired.

[0054] This embodiment also provides a cannula shaping method, which is implemented using the aforementioned cannula shaping tool and includes the following steps:

[0055] S1. Connect the anchoring component 1 to the hydraulic pipe 100, and lower the casing shaping tool into the casing 102 to be repaired, above the deformed part of the casing. Specifically, slowly lower the casing shaping tool through the hydraulic pipe 100. When the casing shaping tool encounters resistance, it indicates that the casing shaping tool has been lowered to the deformed part of the casing. Then slowly raise the casing shaping tool about 0.5m.

[0056] S2. Adjust the hydraulic pressure of the hydraulic pipe 100 to the first preset value, and start the anchoring assembly 1 to anchor the casing shaping tool inside the casing 102 to be repaired. Specifically, start the drive pump on the ground, and use hydraulic pressure to drive the anchoring slip 12 to extend out of the anchoring column 11 and tightly abut against the inner wall of the casing 102 to be repaired.

[0057] S3. Adjust the hydraulic pressure of hydraulic pipe 100 to the second preset value, open the one-way valve 23, and the shaping component 3 is hydraulically driven to perform the shaping operation. By implementing the above-mentioned casing shaping method, it is possible to anchor first and then shape, thereby facilitating ground control and observation of the construction process.

[0058] Optionally, the following steps are included after step S3:

[0059] S4. Adjust the hydraulic pressure of hydraulic pipe 100 to be lower than the first preset value, close the one-way valve 23, and close the anchoring component 1; S5. Continue to lower the casing shaping tool to above the next casing deformation point; S6. Repeat steps S2-S5 to complete the shaping of the casing 102 to be repaired. That is to say, after one shaping stroke is completed, the ground drive pump depressurizes, causing the pressure relief device in the hydraulic drive component 31 to automatically start and begin depressurization. After the shaping cone shrinks, the anchoring slip 12 retracts, and then the process of anchoring and shaping is repeated until there is no obstruction when lowering, indicating that the casing shaping is complete.

[0060] Optionally, after step S3, the following steps are also included: S7, extracting the sleeve shaping tool; S8, if the sleeve shaping tool is stuck, activating the release component 22 to cut the connecting pipe column 21; S9, lifting the sleeve to be repaired from the component above the connecting pipe column 21. That is, when it is found that the sleeve shaping tool cannot be lifted, the lifting force is first increased. If it still cannot be lifted, a ball 222 is inserted into the sleeve shaping tool. Then, the drive pump is turned on to push the ball 222 to the ball seat 223 to form pressure. At this time, the hydraulic pressure is slowly increased to the designed release pressure, thereby cutting the shear pin and removing the sleeve shaping tool connected to the hydraulic pipe 100.

[0061] Furthermore, after the casing shaping tool is pulled out of the well, existing logging tools can be used to perform logging operations on the shaped section and check the effect of the shaping operation.

[0062] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A sleeve shaping tool, capable of being connected to a hydraulic pipe (100), characterized in that, include: An anchoring component (1) is connected to the hydraulic pipe (100), and the anchoring component (1) is able to expand when the hydraulic pressure reaches a first preset value to lock inside the sleeve (102) to be repaired; The functional section (2) includes a connecting column (21), a release assembly (22), and a check valve (23). The connecting column (21) is connected to the end of the anchoring assembly (1) away from the hydraulic pipe (100). The release assembly (22) and the check valve (23) are both disposed inside the connecting column (21). The release assembly (22) enables the connecting column (21) to release the hand. Shaping component (3) is connected to the end of the connecting column (21) away from the anchoring component (1); The one-way valve (23) can open when the hydraulic pressure reaches a second preset value to connect the anchoring component (1) and the shaping component (3). The second preset value is greater than the first preset value. The shaping component (3) can be hydraulically driven to perform shaping when the one-way valve (23) is open. The connecting column (21) includes a first column (211) and a second column (212). The first column (211) is connected to the anchoring component (1), and the second column (212) is sleeved on the first column (211). The second column (212) is connected to the shaping component (3). The throwing assembly (22) includes a pin (221), a throwing ball (222), and a ball seat (223). The ball seat (223) is connected to the first column (211) and located inside the second column (212). The pin (221) passes through and fixes the ball seat (223) and the second column (212). The throwing ball (222) can enter the second column (212) through the anchoring assembly (1) and press against the ball seat (223). The throwing ball (222) can squeeze the ball seat (223) under hydraulic drive to cut the pin (221). The shaping component (3) includes a hydraulic drive (31) and an expansion cone (32). The hydraulic drive (31) includes a drive housing (311) and a push shaft (312). The drive housing (311) is connected to the connecting column (21), and the expansion cone (32) is connected to the drive housing (311). The push shaft (312) includes a connected shaft column (3121) and a tapered portion (3122). The shaft column (3121) is axially slidably disposed within the drive housing (311), and the tapered portion (3122) is self-... The shaft column (3121) extends into the expansion cone (32). The sliding of the shaft column (3121) can drive the cone (3122) to push the expansion cone (32) to expand. The drive housing (311) also has a pressure relief device. After the drive pump depressurizes, the pressure relief device automatically releases pressure, the cone (3122) retracts upward, and the diameter of the expansion cone (32) shrinks. The expansion cone (32) can shrink as the cone (3122) retracts, avoiding the expansion cone (32) from sticking to the deformation position of the sleeve.

2. The cannula shaping tool according to claim 1, characterized in that, The single-flow valve (23) includes an elastic element (231) and a blocking element (232). Both the elastic element (231) and the blocking element (232) are disposed inside the connecting pipe (21). The blocking element (232) can block the connecting pipe (21) under the action of the elastic element (231).

3. The cannula shaping tool according to claim 2, characterized in that, The single-flow valve (23) further includes a guide post (233), a tubular section (234), and an end plate section (235). The tubular section (234) is disposed inside the connecting tubular section (21). The end plate section (235) is disposed at one end of the tubular section (234) away from the anchoring assembly (1). The guide post (233) is slidably disposed on the end plate section (235). The sealing member (232) is disposed on the guide post (233). The elastic member (231) is sandwiched between the sealing member (232) and the end plate section (235). The sealing member (232) can press against the inner wall of the tubular section (234) under the action of the elastic member (231) to block the tubular section (234). The end plate section (235) is provided with a through hole (2351).

4. The cannula shaping tool according to claim 1, characterized in that, The hydraulic drive unit (31) is connected to the connecting column (21), and the expansion cone (32) is connected to the hydraulic drive unit (31). The hydraulic drive unit (31) can drive the expansion cone (32) to expand when the one-way valve (23) is opened.

5. The sleeve shaping tool according to claim 1, characterized in that, The anchoring assembly (1) includes an anchoring column (11) and an anchoring slip (12). The anchoring column (11) can be connected to the hydraulic pipe (100). The anchoring slip (12) is movably disposed on the anchoring column (11). The anchoring slip (12) can expand when the hydraulic pressure reaches the first preset value to resist and lock into the sleeve to be repaired (102).

6. A method for shaping a casing, characterized in that, The procedure is carried out using the cannula shaping tool as described in any one of claims 1-5, and includes the following steps: S1. Connect the anchoring component (1) to the hydraulic pipe (100), and lower the casing shaping tool into the casing to be repaired (102) and place it above the deformed part of the casing. S2. Adjust the hydraulic pressure of the hydraulic pipe (100) to the first preset value, and start the anchoring assembly (1) to anchor the casing shaping tool in the casing to be repaired (102); S3. Adjust the hydraulic pressure of the hydraulic pipe (100) to the second preset value, open the single-flow valve (23), and the shaping component (3) is hydraulically driven to perform the shaping operation.

7. The sleeve shaping method according to claim 6, characterized in that, The following steps are included after step S3: S4. Adjust the hydraulic pressure of the hydraulic pipe (100) to be lower than the first preset value, close the check valve (23), and close the anchoring assembly (1); S5. Continue to lower the sleeve shaping tool to above the next sleeve deformation point; S6. Repeat steps S2-S5 to complete the shaping of the sleeve (102) to be repaired.

8. The sleeve shaping method according to claim 7, characterized in that, The following steps are included after step S3: S7. Extract the cannula shaping tool from the upper part; S8. If the sleeve shaping tool gets stuck, start the release assembly (22) to cut the connecting pipe string (21); S9. Remove the sleeve (102) to be repaired from the component above the connecting column (21).

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